CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 631,643	$ 626,030	$ 518,781
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX
Derivative instruments net unrealized gain (loss), net of tax benefit (expense) of $49, $(292), and $234	(147)	(891)	713
Pension and other postretirement benefits activity, net of tax benefit (expense) of $484, $(1,073), and $801 (Note 9)	(1,319)	3,093	(2,422)
Total other comprehensive income (loss)	(1,466)	2,202	(1,709)
COMPREHENSIVE INCOME	630,177	628,232	517,072
Less: Comprehensive income attributable to noncontrolling interests	15,112	17,224	17,224
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	$ 615,065	$ 611,008	$ 499,848